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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2023-02-21 17:14:37 UTC
HMDB IDHMDB0000224
Secondary Accession Numbers
  • HMDB0012279
  • HMDB00224
  • HMDB0060151
  • HMDB0060152
  • HMDB12279
  • HMDB60151
  • HMDB60152
Metabolite Identification
Common NameO-Phosphoethanolamine
DescriptionO-Phosphoethanolamine, also known as PEA, phosphorylethanolamine, colamine phosphoric acid or ethanolamine O-phosphate, belongs to the class of organic compounds known as phosphoethanolamines. Phosphoethanolamines are compounds containing a phosphate linked to the second carbon of an ethanolamine. O-Phosphoethanolamine is used in the biosynthesis of two different types of phospholipids: glycerophospholipids and sphingolipids. O-Phosphoethanolamine exists in all living species, ranging from bacteria to plants to humans. Within humans, O-phosphoethanolamine participates in a number of enzymatic reactions. In particular, cytidine triphosphate and O-phosphoethanolamine can be converted into CDP-ethanolamine; which is mediated by the enzyme ethanolamine-phosphate cytidylyltransferase. In addition, O-phosphoethanolamine can be biosynthesized from ethanolamine; which is catalyzed by the enzyme choline/ethanolamine kinase. In humans, O-phosphoethanolamine is involved in phosphatidylcholine biosynthesis. O-phosphoethanolamine is also a product of the metabolism of sphingolipids. In particular, sphinglipids are metabolized in vivo to phosphorylethanolamine and a fatty aldehyde, generally palmitaldehyde. Both metabolites are ultimately converted to glycerophospholipids. The lipids are first phosphorylated by a kinase and then cleaved by the pyridoxal-dependent sphinganine-1-phosphate aldolase. Elevated urine levels of O-Phosphoethanolamine or PEA can be used to help in the diagnosis of Hypophosphatasia (HPP). Reference ranges for urinary PEA vary according to age and somewhat by diet, and follow a circadian rhythm. Outside of the human body, O-phosphoethanolamine has been detected, but not quantified in, several different foods, such as oxheart cabbages, anises, shiitakes, abalones, and teffs.
Structure
Data?1676999677
Synonyms
ValueSource
2-Amino-ethanol dihydrogen phosphateChEBI
2-Amino-ethanol phosphateChEBI
Colamine phosphateChEBI
Colamine phosphoric acidChEBI
Colaminphosphoric acidChEBI
EAPChEBI
Ethanolamine acid phosphateChEBI
Ethanolamine O-phosphateChEBI
Ethanolamine phosphateChEBI
mono(2-Aminoethyl) phosphateChEBI
Monoaminoethyl phosphateChEBI
O-PhosphocolamineChEBI
O-PhosphorylethanolamineChEBI
OPEChEBI
PEChEBI
PEAChEBI
PETNChEBI
PhosphoethanolamineChEBI
Phosphoric acid 2-aminoethyl phenyl esterChEBI
Phosphoryl-ethanolamineChEBI
2-Amino-ethanol dihydrogen phosphoric acidGenerator
2-Amino-ethanol phosphoric acidGenerator
ColaminphosphateGenerator
Ethanolamine acid phosphoric acidGenerator
Ethanolamine O-phosphoric acidGenerator
Ethanolamine phosphoric acidGenerator
mono(2-Aminoethyl) phosphoric acidGenerator
Monoaminoethyl phosphoric acidGenerator
Phosphate 2-aminoethyl phenyl esterGenerator
PhosphonoethanolamineHMDB
2-Amino-ethanol dihydrogen phosphate (ester)HMDB
2-Aminoethanol O-phosphateHMDB
2-Aminoethyl dihydrogen phosphateHMDB
2-Aminoethyl dihydrogen phosphate (acd/name 4.0)HMDB
2-Aminoethyl phosphateHMDB
Colamine acid phosphateHMDB
Colaminephosphoric acidHMDB
EthampHMDB
O-PhosphonatoethanaminiumHMDB
PhosphoryethanolamineHMDB
PhosphorylethanolamineHMDB
Phosphorylethanolamine, 3H-labeled CPDHMDB
Phosphorylethanolamine magnesium (1:1) saltHMDB
Phosphorylethanolamine zinc saltHMDB
Phosphorylethanolamine, cobalt (2+) (1:1) saltHMDB
Calcium 2-aminoethanol phosphateHMDB
Phosphorylethanolamine ca (1:1) saltHMDB
Chemical FormulaC2H8NO4P
Average Molecular Weight141.063
Monoisotopic Molecular Weight141.019094261
IUPAC Name(2-aminoethoxy)phosphonic acid
Traditional Namephosphorylethanolamine
CAS Registry Number1071-23-4
SMILES
NCCOP(O)(O)=O
InChI Identifier
InChI=1S/C2H8NO4P/c3-1-2-7-8(4,5)6/h1-3H2,(H2,4,5,6)
InChI KeySUHOOTKUPISOBE-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as phosphoethanolamines. Phosphoethanolamines are compounds containing a phosphate linked to the second carbon of an ethanolamine.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassOrganic phosphoric acids and derivatives
Sub ClassPhosphate esters
Direct ParentPhosphoethanolamines
Alternative Parents
Substituents
  • Phosphoethanolamine
  • Monoalkyl phosphate
  • Alkyl phosphate
  • Organic nitrogen compound
  • Organic oxygen compound
  • Organopnictogen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Primary aliphatic amine
  • Amine
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
Biological locationSource
Process
Naturally occurring process